On Thu, Jan 12, 2017 at 10:11:29AM -0500, Jerome Glisse wrote: > On Wed, Jan 11, 2017 at 10:54:39PM -0600, Stephen Bates wrote: > > > What we want is for RDMA, O_DIRECT, etc to just work with special VMAs > > > (ie. at least those backed with ZONE_DEVICE memory). Then > > > GPU/NVME/DAX/whatever drivers can just hand these VMAs to userspace > > > (using whatever interface is most appropriate) and userspace can do what > > > it pleases with them. This makes _so_ much sense and actually largely > > > already works today (as demonstrated by iopmem). > So i say let solve the IOMMU issue first and let everyone use it in their > own way with their device. I do not think we can share much more than > that. Solve it for the easy ZONE_DIRECT/etc case then. Jason -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
